Meter



METER Filed May 2,0` 1821 lO Sheets-Sheet l METER Filed May 20 1921 o sheets-sheet :e

RU. G7757? Augg 5y LSSZ R. F. SCHUCHARDT METER 10 Sheets-$heet 3 Filed may 2m 1921 1,504,082 Aug' 5' 1924 R. F. SCHUCHARDT METER' Filed May 201 1921 lO Sheets-Sheet 5 @f fads R. F. SCHUCHART METER lO Sheets-'Sheet 6 Filed May 2o, i921 METER Filed May 20, 1921 lO Sheets-Sheet '7 5 A.55' iii ug. 5, 1924.l 1,504,082 R. F. SCHUCHARDT METER Filed May 20y 1921 lO Sheets-Sheet S R. F. SCHUCH/M'DT METER .Filed may 2OY 1921 lO SheetS-Sheet 9 Aug. 5, 1924.` 1,504,082

R. F. SCHUCHARDT METER Fild Mas' '2o 1921 1o sheets-sheet 1o Patented Ang. 55?? 3.92@

nnirnn e RUDOLPH F, SCHUCKB' T0 all '107mm 'it may concern.

Be it known thnt I, R-Unonrr SionUcHAimT` :L citizen of che Uni v. residiner at Chicago, in the countj,l of @oo and State oi illinois, have invented certain new and useful improvement i Meters, of which the ioHovving is :i tuil true, concise, and exactJ descriptioni reinL ence being had to the accompanying' cire in such system, butA may he cnipioyed in n system of any number of phases.

is defined is the ratio of the t/oei watts the vectorcurn of the voit ninperes severai phasesA rtheJ tangent of 'the eng corresponding to the power factor in three-phase circuit `is the ratio of t reactive component. to the watts of the circuit. Thepower factor meter herein descriheivl registers the ratio off the integrated reactive component. to the hours ior any specified periodr` hut prints the correspondiner power factor.

if two wett hour meters he so connected. to the same circuit that. one th reactive. component and the other win: hours, then ihc ratio of the registration o (he reactive component meter to `-the porsi component nieter is the tangent of phase angie of the circuit, as defined e ove.

it' these two meters he provided. 'ami- 'contncts similar to the 4contacts used 'for ,operating printoineters,l then the the number of contacts made oy ti component, meter 'lo the nuinher of contacts niade by the power componenty meter in any speciied time is the tangent et the phase :ingle of the circuit and troni such ratio vthe power factor of the circuit for the given period of time can heceieuioteci.

if the nuniher of contacts inode hy the rczictwe con Jonent, meter he repreojf tno on n rectengiiar and the contact-s inode j Y* component meter he repre- N the ehscissef, then one iin-e7 on@ one iine is wceted in that piane 'byziny conihin "ion of contacts corresponding to vaine power factor 'then preveiiing.

To appiy this ncipie to e recording ovver eeitor 'veines of power 'factor 'e eeicniezed for sniicient number of of" conacts to incet eil practicable euireinen n n i hose viii e specied period of time are eet in type on n drnni on positions. @poration o vthe reactivo componenty nieter the drum one step for erich Contact, corresiionding; to the ordinates. The opere.- tion oit the contacts of the power component .ieter steps e. printing mechanism parallel to the shaft. o1Q the drinn one step for each conte rt. coRespondingl to the ahscisse. This pri'1`u-iig-niecininisnia therefore, et any instant, with the. type on the drinn correspondinn to the power factor oi' the circuit 'for the time interval under consideration. By 'cui-posingw a peper record strip und en ink riiioon hetvveen the drinn und he. printing' device and supplying ineens tor pressing' the printing device against thc drinn the ,record is obtained. The meter is reset to Zero et regular intervals.

n order to acquaint those skilled in che ort with the manner ot constructing` :1nd practicing the invention, shalt now de- Scrihc a Specific embodiment of the sinne, in connection with they accompanying dran ings. in which:

iigiire i is einnmrv in o' my :i pien view of the meter invention iefb end elevational view;

t end eievationui View:

together with 22% iiiustrzites ein', connections Jfor the meter. y ne considered che upper heit rear elevation showing the mechanism tor selecting the desired printing platen or finger;

Figure 8 is a vertical section taken on line 8-*8 of Figure 1 showing in elevation the means for advancing the platen select ing mechanism;

Figure 9 is a similar section taken on line 9-9 taf-Figure 1, showing the organization of parts :for advancing the drum rotarilv for rocking the printing shaft and l'or ad vancing the paper feeding mechanism:

Figure 10 is a similar view talien on line 10--10 of Fig. 1 illustrating the time wheel advancing mechanism;

Figure 11 is a "fragmenta ry plan view illustrating one of the printing lingers shown in side elevation in Figure t;

Figure 12 is a fragmentary detail view in plan illustrating the pawl for hdvanrcing thel paper feed as shown at the top ol litigare Figure 13 is a fragmentary detail `view illustrating partly in plan and, partly in section the cam and pin for operating the paper advancing Slide; v

Figure lef: is a fragmentary sectional view of one of the magnetic clutch i'nembers7 namely, the one shown at the middle otl Figure 1;

Figure 15 is a fragmentary end elevation of said clutch and the automatic lock and full stroke device lfor the Figure 111-;

Figure 16 is a side view ol the device, shown in Figures 14 and 1o;

Figure 17 is a fragmentary cross sectional View illustrating the run ot th(l paper web, the riloloon and the printing finger;

Figure-18 is an end elevational view trom the right of Figure 1 showing the stop tor limiting the return movement. olt the drum for controlling the printing linger selecting member Figure 1(l is a fragn'lentary horizontal section and Figure 2O is an elevational end view ot' the magnetic clutch shown at the lel't ot Figure l;

Figure 21 is a t'lznfn-icntary view of a part of record sheet showing the record made by the machine` and l `igure JZ is a diagram-- matic layout ot' a system emhodying my invention.

The deviceillustrated in the drawings comprises essentially a drum l having thereon in proper position printing numerals vlor print ing the power factor and maximum demand which are to he recorded. The drum is shown 1n developed torni in Figure ti. The

surface o't' the drum is divided into small facets or squares, and numerals are placed upon these facets or squares, the surface,L being graduated longitudinally of the drum at 300 in terms 0i watts or power component, and being graduated circumferentially or at A,flesh-ed, to indica clutch shown in.

riglitinngles thereto at 301 in terms of reactivecomponent. The. numerals 802 which ailouplaeed in the squares have values corresponding to th power factor. lf it is i ie maximum demand, the demand may he indicated ,in either power coiiiponent (watts) or reactive component (watt'less). ll' the meter is to he employed as a n'iaxin'nun demand meter only, the reading ot' power component t watts) and ot' reactive (vattless) component may he employed or without power factor, and where the meter is to be employed as a power factor meter only, the readings of power factor alone may he cn'iployed. At the right hand end olE the drum 1 l have provided a time wheel. 1th which has tigures thereon indicating the time in minutes` or in other suitahle divisions oi time. This time wheel is adapted to be :ulvanced periodically preferably z t the same time that the re-setting o'll the drum to zero occurs. 'lhe drum 1 is journaled on vert-ical l'rame plates 2 and 3, which are secured hy. angle irons 4 and 5 to the mail' hase-plate t5, which lorms a mounting for all ol the parts'l hercimtt'ter described. The drum 1 hm, a sha'l't 7, which hears at its lett end, as viewed in Figure l. a rotary circuit controller S, which is provided with a metallic riim except at the pointI th where an insert. ol' insulation .serves to opeu'thc main operai ing circuit olI thtl meter.. as will bcdesrribcd later. rl`he time wheci lt), to which rel'- erence has previously been made. is mounted on this isha lt. and has it periphery, which is graduated in suitable units ol' time. lying.r flush with theI adjacent, periphery o'lthe main druln 1, so that thesc two memlwrs` namely7 the drum 1 and the time wheel lll, iorm mechanically eontimious surfaces l'or the purpose ot making a record. 'lhe time wheel 10 has an advancing ratchet 1l. which is engageable by tht` pawl 11 and which has a holding pawl l?) (sce Fig. lll). The, pa wl l2 is actuated Vt'or each period of time over which a record extends. This time wheel is never re-set. hut rn'oceeds continuously, and where the period is oneI hour this time wheel is prel'erahly advanced in 2li steps. l l' the period is in halt hours, 48 steps may he employed. f 'l`hc shul't ol tht` drum l is connected-to Aay spiral spring 1l` so that the drum may be llt) meter Q1., which is responsive to reactivo vtudir .d holding pawl 26 (see Fig. 9) has a rearwardly extending arm 27, which. adapted to be depressed against the tension of the spring to release the drum at the end ot a predetermined period innnediately after a record has been made. o the advance of the drum. The advancing pawl l is guided in the slot 13S formed in the side-plate 4, and is held in proper position by the spring L39. The er lo, which bears the pawl 15, is retracted y spring le() (see Fig. rlhe drum l is revoluble only, ani. in order to get a twodiinensional selection or' number on said drum, it is necessary to secure a longiselecting action by the slider 29 (see Figs. i and 1i), which is supported open pair ot-shat'ts 39 and 3l the shaft 30 being preferably round and the shaft 3l being preferably square. nlie slider 29 has collar 32 mounted thereon adapted to be dabie on said shatt'l, but rotatable thererthe collar 32 carries a 'printing arm which swung about the axis of 'the aft 3l when said shaft is rotated or rocked .o engage corresponding printing platen 'which presses the paper sheet 35, against proper numeral on -the printing drum. series ot printing platens 94 is mounted .ow on a shaft 80. Each platen cooptype en erom 3i.. The slider 29 is moved in steps to et the proper row of type, and the drum. is rotated to select thc proper individual character. 1lfhe paper is carried on a supply roll 3'?, which is supported by the spool This spool is removably journaled in the. side-plates 2 and 3, as shown at 39 and v t See Fig. l.) The paper passes between the drum and the printing platens 3ft, under the drum l, then over a guiding roller fil., and upon a receiving spool d2, which is journaledat the top of the side plates and 3 Fig. 4). The receiving spool 42 has a ratchet wheei 43, adapted to be engaged by a pawl @sa ttor advancing the paper after each printing operation (see Figs. 2 9-12 and' 13). The pawl i4 is pivoted on the pin 45 at the upper end of a vertically slidaiole rod 16, which rod is guided in a pair oi' guides fi?, 48, and normally held in its upper position by means of the spring 49. The pawl lli is provided with a suitable spring 44e. 'llhe lower eno of the rod 4:6 carries a pin 50, which is adapted to be engaged by a camarm 51, (see Figs. 9 and 18) which cam-arm is mounted on a cam-shaft F2, at the rear ot the machine, as will be described more in detail later. The shaft is ourna-led in the bones 53 and 54, which are mounted at the rear ot the device upon the base-plate 6. The slider 29 above mentioned 'for selecting the longitudinal position, on the drum l is moved back' and forth slidably on the shafts 30 andv El, by :leans of a ieXible cable 55, which is connected to this slider, and which is adapted to be wound upon a drum 56. This drum contains a spring (not shown) for returning the slider 29 to its Zero position, namely, furthest to the left, as viewed in Figure 7, when the holding pawl 57 is released. rlhis pawl is pivoted upon a pin 58, and has an arm 59 which extends downwardly and towards the rear, where it may be engaged by the releasing cam 60. The drum 5G hasn ratchet Wheel 6l, which is adapted to belengaged by a paivl 62 for ad vancing thc drum 56, and thereby the slider 29. The pawl 62 is mounted on the end of a lever 6?), the rear end 0r arm 64 of which is adapted to be engaged by the cam memw bers 65, G6. The lever 63 is pivoted at 67 on a bracket mounted on the base-plate 6. A. spring 68 tends to hold the pawl 62 in engagement with' a. pin 69, which forms a. throw-out for said pawl as the same is advanced. rihis spring at the same time tends to hold the pawl 62 and lever 63 in downward or retracted position. The cable is wound about the drum 56 and trained over pulleys L70 and 7l, from whence this cable extends horizontally in a loop over the pulley or sheave 72, which is mounted on a trame-plate 2. rThe cable is attached to the top of the' slider 29 at the pin 73, while the lower run of the cable 55 passes through an opening 74 termed in the. body of the slider, as will be apparent from Figure 4. The ratchet Wheel Gl on the drum 56 is adapted to be engaged by the holding pawl 57, which is mounted upon the upper end of a lever 100 'iti pivoted at 58, and adapted to be held into engagement with said )awl by means of the spring 78. The lever 6 has a downwardly extending arm.59, which is adapted to be engaged by the cam which is mounted on 105 the shaft- 52. The drum l has circumferential rows or printingnumerals, and has corresponding printing platens 34, all hinged' on a common rod 80, as is apparent from Figures 4- and 11. rllhe longitudinal movement o1" the slider 29 is accomplished step by step, in accordance with the registration et units of power upon the power component watt meter 82, as shown in Figure 22. The addition of a unit to the watt meter closes a circuit at the contacts 8?) or 84. as the case may be. lo advance the slider to select a corresponding printing platen registering with the proper row of numerals on thedrunl 1.

in order to provide the power for rotating the drum l, advancingl the time wheel 10, stepping forward the slider 29, prinling the proper indication at the end of a given period, feeding the paper record sheet, and causing the release of the various parts, l have provided the power shaft 85, which is constantly' driven by means of a motor 86, indicated in Figure 3. This motor is mounted .in vertical position upon y'an L- shyped bracket, a portion of which isshown 1"() at 87, Figure, 3, secured to the base-plate 6, and has a vertical motor shaft 88, upon which is mounted a worm 89. This worm meshes with a worm-wheel 90 rigidly secured to the power shaft 85.V I provide a series of clutching solenoids, 91, 92 and 93, which are controlled by the reactive componenlgwatdtY meter 21, the time controlled contact` making device 94, and the power component watt 1nete.1.,82, respectively. .The

shaft is mounted fin bearing blocks 95 and 90, which are best shown in Figure 1. Collars 97 and 98 prevent endwise movenient of this shaft. The clutching solenoid 92, which is shown in cross-section in Figure 111, comprises a barrel member 99, which houses the winding 100 of a solenoid, the terminals of which are connected to the slip rings 101 and 102. The barrel 99 carries a clutching pin 103. which is adapted to engage in the scrrations 104 of the co-operating clutch member 105, which clutch member is pinned to the shaft 85, as shown at 100, in Figure 14. The barrel 99, with the sli p rings 101 and 102, is freely slidable on the shaft 85. The slip ringsl 101 and 102 are mounted on a sleeve of insulation 107, which, in turn, is borne by an extending hub 108 forming al part of the, barrel 1nember 99. A gear-wheel 109 is secured to or formed as a. part of the barrel 99, and this gear-wheel .-is constantly in mesh with a pinion 110, which is mounted on the camshaft 52. The winding of the solenoid 100 is adapted to be energized by closing of the contacts 111 and 112 at the time controlled contact making device 91, these contacts periodically closing a circuit through the source of current113, and wires 114:, 115, which wires are. connected to the spring contact brushes 11G and 117.l Assuming that the contact making device 94 closes the circuit, the solenoid winding 100 will be energized and will move the barrel 99 axially to the right, as viewed in Figures 1 andv 141, bringing the pin 103 into engagement with the teeth 104 on the clutch member 105. lation, due to the drive of the motor 86, the engagement of the pin with the clutching teeth causes the gear-wheel 109 to drive the pinion 110 and the connected cam-shaft In order to ensure a complete revolulion of the shaft 52, I have provided a locking device 118` shown in Figures 15 and 1G. This locking device has-a base member 119, which is guided on the pins 120 and 121, which pi1is',play in slots formed m said base member lllll. lhe locking member 118 ex.- ,tends upwardly from the base member 119, land beans at its upper ,fend two fingers 122 d` 123.! The finger 122 is adapted to enygage ltlre face of the gear-wheel 109, x as shownlln figures 15 and ,16. The linger 123 engages vnotch 124 in the liange 125,

Since the shaft 85 is in constant ro' which is connected to the pinion 110. When the solenoid 100 is energized, it shifts the gear-wheel 109 to the left, as shown in Fig- .ure 16, engaging the finger 122, and moving the locking member 118 to the left, as shown in vsaid figure, against the tension of the spring 126. In thus moving the locking member to the left, it disengages the linger 123 from the notch 1241, so that the rotation of the gear-wheel 109, which is clutched to the shaft 85 is free to drive thepinion 110 and the cam-shaft 52 connected therewith. The contact made at the time controlled circuit controller 94, as shown in Figure 5, may be only temporary, and it will be sufficient to energize the solenoid .100, clutch the barrel 99 to the clutch 105, and move thel disk or flange 125 so that the finger 123 is out of register with the notch 124. The barrel 99 and clutch member 105 will notI be disengaged until the linger 123 comes into register with and drops into the notch 1211, whereupon the finger 122 is free to disengage the pin 103 on 'the barrel 99 from the teeth 104 on the clutch 105. Thus, the stop member 118 serves tle dual purpose of ensuring a complete turn of the shaft 52, and of throwing the clutch members 99 and 105 out of engagement after said movement has been completed. The shaft 52 is thus rofated a complete turn for each period of time as registered on :the clock 127. The" of the slider axially can be accomplished until the movement of the shaft 52 is completed. This function is performed by a circuit controller 128 mounted on the shaft.

52, and having the bridging contacts 129 and 130 mounted 011 a drum 131 of insulation. Mechanically, the first action that is; performed by the shaft 52 is operation of` the proper printing platen 35 by means of the cam 51; printing is accomplished by partial rotation of the square shaft 31, which shaft, in turn, rocks the linger 33 against the registering printing platen 34, to cause the platen to engage'the paper, and press the same against the ribbon 132, which ribbon, lhrough the medium cf the type on the d'um 1, prints an indication upon the .paper of either maximum demand or power factor. The ribbon 132, it will be noticed,

is fed from the ribbon spool 133 to the spool 131, in this case manually, suitable guides being provided for holding the ribbon in rocking ot the square shaft 31 causes the' printing linger 3S to engage the selector platen 34, and print an indication tor the particular period of time.

Simultaneously with the printing of the indication of the drum 1, l print an indication ot the time corresponding with the record ofthe drum. This is accomplished by an additional printing linger 33 (Figure 17) mounted directly on the square shaft 81 at the extreme right of the instrument, as shown in Figure 1, a corresponding printing platen 34 bein(r mounted in register with said time-wheel3 10, so that the print ing of the .time from the time Wheel 10 and the printing oi the indication from the drum 1 are made on the record sheet 85.

The next motion ot the shaft is to cause engagement between the cam. 51 and the pin on the vertically sliding rod 46, to cause the pavvl 44 (see Figure 9), to engage the ratchet 43 for advancing the paper lVhen the cam 51 passes the pin 50, the rod 4G will be retracted by the spring 49, the ratche 43 being held against retrograde movement by the holding paivl 13o', as shown in Figure 9. Substantially simultaneously With the movement of the paper advancing pawl 44, the cam at the other end of the cam-shaft engages the releasing arm 59 ot the holding pawl 57, which holds the ratchet wheel 61 ot the drum 5G. This ratchet Wheel Gl, it will be remembered, is connected by the llexible cable to the slider 29. Thus, the raising of the pawl 57 permits the slider 29 to return to the :cero position, under the influence ot' the spring in the drum 56.

The next step mechanically which occurs during the rotation of the cam-shaft 52 is the release of theholding pawl 2G, ot' the drum 1, as shown in Figure 9.

The drum 1 thereupon returns to its Zero position.y being stopped in said position by means ot' a pin or shoulder 11i-1 on the ratchet 25, which engages a stationary pin or shoulder 142 on the side-plate member 4, as shown iudotted lines in Figure 9. The rain (3U thereafter engages the end of the lever 14B, which lever is pivoted at 80, as shown in Figure 10, for actuating the advancing pawl 12 ot' the time Wheel 10. The pawl 12 has a pin 144, which plays in the slot 145 for throwing out the pawl after it has completed its stroke. A spring 146 attached to the pin 144 and to the plate member i3, tends to return the pavvl and the lever to their retracted position. The parvis 12 and 13, as previously explained, need not be disconnected from the ratchet Wheel 1.1, since this Wheel advances in one diection only.

The continued motion of the shaft 52 finally brings the notch 124 and finger 123 into register, whereupon the finger 122 presses 'upon the radial face of the gear-wheel 109 (see Figures 15 and 16), ivith the result that the pin 103 is pushed out of the serrations 104, and the motion ot the shaft 52 is at the seme time stopped by the dropping` ot' the stop finger 123 into the notch 124.

Since the motion of the slider 29 must extend over a considerable distance, and it .is inadvisable to make the drum 56 of a .diameter large enough to accomplish this movement in a single revolution, l. employ a drum of relatively small size, and cause it 'to move through more than one complete revolution for securingl the full limit of motion ot the slider 29. In order to bring the drum to rest With the slider 29 in proper Zero position, l provide the stop mechanism shown in Figures 7 and 18. I provide a projecting pin or shoulder 147 on the drum 56, and mount a swinging stop linger 148 upon bracket 149 mounted on the baseplate 6. This stop linger is pvoted at 150, and is normally swung to the right by means oit' the spring 151. The finger 148 engages a co-operating stop member 152, which is pivoted at 153 to the bracket member 149. A spring 154 connected by means of suitable pins tends to hold the stop nger 148 and the stop member 152 in engagement.. The drum 5G in advancing the slider 29, moves in a clockwise direction, asviewed in Figure 18. As the drum rotates, the stop pin or shoulder 147 moves around, just clearing the arm. 155 of the stop member 152. Upon further rotation, the pin 147 engages the stop linger 148, and moves it to the left, as shown in Figure 18. Thereupon, a spring 154, swings the stop member 152 about its pivot 153, in a counter-clockwise direction, thereby bringing the arm 155 out into the path oi the pin 1.47. The parts are so proportion-cd and arranged that the arm 155 of the stop member 152 forms a limit or stop for the outer motion of the slider 29. lfhen the pawl 57 is disengaged from the ratchet (il, the spring which is contained within the drum 5G tends to return the drum to its original position through counter-clockwise motion thereof. The pin 147 is free to pass the stop finger 148. since this finger has been thrown outwardly out of the path or" said pin, and has been held in such position by the stop member 152, which is cam-shaped, is clearly illustrated in Figure 18. Upon completing the first revolution in aretrograde direction, the drum 56 brings the pin 147 into engagement with the arm 155, forcing the same downwardly out. of the path of said pin. Thereupon, the stop finger 148 yis free to return under the iniuence of the spring 154, to the position shown in Figure 18, Where it forms a stop `for the return motion or" the drum for stopping the slider 29 in its zero position.

As was previously explained, to measure the power factor of a three-phase circuit, l employ two integrating watt meters 21 and 82, respectively, as indicated in F igure 22, one watt meter being adapted to register the reactive component fiowing through the. threesphase circuit, and the other meter being adapted to register the power compo nent or k. w. flowing` through the circuit. I have shown in Figure 5 a three-phase transmission line having the wires 157, 158 and 159 fed lroin a delta-connected bank of transformers 160. rl`he, pressure coils 161 und 162 0i the watt meter 21 are connected from the neutral point, ot one phase winding to the common or joining point-ot the other two phase windings; for instance, the 'winding 161 is connected between the neutral point 162i of the winding 164 and the joining point 165 between phase windings 166 and 167. ln a similar manner, the watt meter winding 'lh-2 is connected between the. neutral point 168 ol th. phase winding 166 and the common joining point 169 'of the two phase windings 16JfV and 167. The current coils 171 and 172 of this watt iuelcr 21 are, i'inneeted in series with series transformer windings 173 and 174, which current transformer windings are energized by the current flowing in the line wires 158 and 157, respectively. Yln this manner 4the watt meter 21 is able to register in accordance with `the Wattless component flowing in the three phase circuit. The power component or kdw. meter 82 is connected in the usual manner for re; itering k. w., with its potential coils 181 and 182 connected across the phase windings 164.- and 166 respectively. The current coils 175 and 176 ot the walt meter 82 are connected in series with the ,current transformer windings 173 and 1H 'fthe/*actual power passing through the three phase line. p

It is obvious that my inventlon may be y'employed in connection with a single phase circuit, as the connection for a reactive meter and a power component meter for single phase lines is disclosed in said prior patent to Schuchardt. I shall now describe, the operating circuits for the recording meter, in connection with the diagram ot Figure 22'.

The reactive component meter 21 and rotatable Contact` making device 177, which is adapted to close cont-act alter ately with the contacts 2 and 23, these con yacts co-operating with a common batteryicontaet 24 to close the energizing circuit 'for the solcnoid clutch 91', alternately over thc wires 178 and 179. Wires 178 and 179 aiile connected to brushes 183 and 184, which cri-operate with a rotatable contact making device 185 carried on the shell of the clutch solenoid 91. The clutching solenoid comprises a winding 186, which is connected between the slip rings 187 and 188. The slip ring 187 is a continuous conductor engaged by the brush 189, which brush is connected through a battery or other source ol current 19() over a wire 191, and through the periodic circuit controller 131 and the longitiulinal circuit controller 192 to the brush 24 at the watt meter 21. The yslip ring 188 presents a conducting surtace to the brushes 188 and 184 for only a portion ot its circumference. rlhis isl for the purpose of switching the circuit alternately from the wires 178 and 179 and causing the break ot' the current liow to occur at the slip ring 188 instead ol at the Contact making device 177 ot' the meter 21. The solenoid clutch 91 has a co-operat ing clutch member 198, which has serrations 194` adapted to be engaged rby a pin 195, which pin is mounted on the-barrel ot the member 91. The clutch member 193 is pinned to the shaft 85, the solenoid clutch member 91 being mounted to rotate. freely on the shaft 85. 'Vhen the winding 186 is energized, the member 91 is drawn to the right, as shown in Figures 5 and 19, throwing the pin 195 into mesh with the serrations 194; to clutch these two members together. A throw-out spring 196 is adapted te engage the cam-arms 20 and 19, and hold the meniber 91 out of engagement with the member 193. Consequently, the encrgization of the winding 186 must first overcome the spring 196 to bring the tivo clutch parts into enrgagement, whereupon they will remain. in engagement until the circuit controller 185 .rotates the insulated portion of the slip ring 18'8 under the live brush eitherl-SB or 184 to break the circuit. This is timed to occur substantially at 4the same time that the arms 19 or 20 engage' the"throw-out `spring 196, to secure disconnection ot' the two clutch members at a 'predetermined position oi' the cam members 19 and 20.

The battery circuit for the clutch 91 is cut through the periodic circuit controller 131, through the longitudinal circuit controller 192 and through the rotary circuit controller 8. The periodic circuit breaker 131 is mounted on the shal't 52,-and is arranged to break the energizing circuit for the clutches y91 and 98, whenever the shaft 52 is moved troni neutral position. The purpose ot this is to prevent losing ot a count or registration, on one ot the meters incassa the spring 198 to open.l the battery circuit. This plunger lies inthe ath of the printing linger 33 and is engage to stop accumula tion of any further counts during the particular period of time, case the capacity of the machine is exceeded. In other Words, if more units of k. W., or power component accumulate during a given period namely, a

half hour or hour, as the case may be, than the length of the cylinder will permit, movement of the printing finger 33 on the carriage 29 to the' extreme'let't oft-he niachine, as viewed in Figure 1, will cause the opening of this battery circuit.

A similar protective arrangement is desirable inconnection With the rotation or the drum 1, and I have provided the rotary circuit breaker 8, Which consists of a metallic ring secured on the end of the shaft 7, this ring having an insert of insulation 9 adapted to break the circuit between the springs 202 and 203 when the drum is revolved to the limit of its rotary motion. The limit of motion is determined by the engagement of the pin 141 on the ratchet Wheel 25, with the lower surface of the pin .142 on the frame-plate 4, see Figure 9). The rotation of the solenoid clutch 91 with the shaft 85 causes the cam-arms 19 or 20 to raise the arm 18, and thereby depress thefpawl 15, and advance the drum 1 one step. If the shaft 52 is off normal, or if the longitudinal slider 29 is at the limit of its motion, or if the drum 1 is at the limit of its rotary motion, the solenoid clutch 91 will not be energized until all of said partsus again in normal position, at which time the rotary circuit Will he closed.

The solenoid clutchl 93 for the power component Watt meter 82 is of a similar construction, and it comprises a Winding 201 connectedto the slip rings 205 and 200, en-

gaged by the brushes 207, 20,8 and 209 respectively, these brushes being mounted upon `a suitable block of insulation, or otherwise suitably supported upon the basepla'te G. The slip ring 206 has a portion 210 of insulation for breaking the circuit at the brushes 208 or 209, as the case may be, when the solenoid clutch 98 is engaged with' the stationary clutch member v218, which is pinned to the shaft 85. The brush 208 is connected over the conductor 211 with the corresponding brush 83 on the Contact making device 180 of the power component meter 82. The brush 209 is similarly coniiected to brush 84C of the meter 82 over conductor 212. The brush 207 is connected through the battery circuit to the brush 214 of the contact making device 180. The operation of the solenoid clutch 93 is similar to the operation of the clutch 91. This clutch 93 has a pair of operatingwcam arms (35, 66 adapted toengage the arm 64 of the lever 63 for actuating the drum 56, which drum controis the inflrenient of the slider 29. A throw/mt spriig 215 controls disconnection ot the barrel of the clutch.

"9 hun l). A. u,

21".7 on "the mein 'netic clutch 91 to connect the constantly driven shaft 85 through a cani mechanism to a paivl ratchet mechanism for advancing the drum rotarily. The power component meter 82, in a. similar manner, controls through a magnetic clutch the con nection of the constantly driven shaft 85 `through a paivl and matchet advancing mechanism, the advance of the slider 29 longitudinally on the drum 1', the drum being graduated in te 1ins ot' power factor,

namely, Yin terms of the cosine of the angle Whose tangent. is the ratio of reactive component to power component., will give,

at the registering point of the slider and the drum, an indication of the power factor over the period during which integrated values ot reactivecomponent and power component have been considered.

Theoretically, it the units of time are u made small enough, the device may become a direct indicating meter, and 1 do' not limit the device of my invention to ex tended periods ot' time nor to actual printing ot a record 'for each period of time.

However, in the specilic machine which l have illustrated.y thc clock 127 periodically closes the circuit oi the magnetic clutch 92 to cause the cam shaft 52 to be actuated a complete revolution. Such revolution causes, First, the opening of the battery circuit, thercby preventing the loss of a count from either ot the meters 21 or 82, then prints the indication determined liv the two meters 21 and 82, then advances tie record sheet, then releases the slider 29, and restores it to '/.ei-o, then releases the drum 1 and restores it to zero, and thereafter advances the time wheel 10. Advancement ot' either the drum 1 or the slider 29 to the cxtreme limit oi movement will cut oil' i'uither operation ot' the advancing inechanisms for these elements until the beginning of the next period.

lt will be noticed that the record sheet is adapted to receive impressions over any portion of its Surface, and that the actual imprint will be made at a point. corresponding in distance from the zero end ot the drum to the variable, in this case power compound 19.,

nent, which controls the longitudinal advance of the slider. Consequently, the indication will be printed at a position on said drum whiclriwill correspond to the value of the longitudinal component. Thus, the record sheet itselit indicates directly by the position ot the printed characters the value ot' one of the variables, namely, power component. This means that after the record is made, it is possible to select from the record instantly by inspection the maximum demand in -erms of power component of the load over the period which is printed on the particular portion of the record sheet.

It is obvious that the relation of power and wattless component may be interchanged, so that if desired the wattless component may be indicated in the same manner as power component. Thus, on Figure 2l, the printed numerals over the surfacel of the chart indicate by their distance from the left the power component or k. w. value of the load at the givenhour corresponding' to the index figures at the extreme left of the sheet. It is thus possible to ascertain that the maximum demand in this particular instance occurred at the hour of 12 :O0 in the middle of the day, the lighter ligures at the left indicating A. M., and the heavier figures at the left indicating P. M.

Numerous modilications may be made without; departing from my invention.

i claim l., In combination, a meter for measuring unitary values of a variable, a constantly driven shaft, a type wheel adapted to be advanced progressively in steps corresponding` to the registration of units on such meter, advancing means tor said type wheel, and means controlled by said meter ior clutching said shaft to said advancing means.

2. In combination, meter for measuring unitaryvalues of a variable, a constantly driven shaft, a recording chart, a record sheet, movable means for selecting a graduation on said chart corresponding to the unitary values regisered by said meter, means 'l'or-advancii said selecting means, and means controlled by the meter t'or clutching said shaft to said advancing means.

3. ln combination, a m Afor measuring unitary values oi' i constantly driven shaft, a recr-y recording chart, movable mean a graduation on said chart c .o the unitary values register ser, means .for advancing said .C ns, means controlled by the n hing said shaft to said advai means for printing a selected said chart on said record sheet -4 actuated by said constantly driv ieriodically actuating s 4f. com` driven shaft, and time controlled meansadapted to be connected to said shaft for making a reciord of the selected graduation on said drum. t

5. Inbcombination, a. pair of metersfor measuring unitary values of two variables, a chart having graduations in two dimensions over its entire area in terms of a function of said two variables, means controlled by one of said meters for making a selection in one dimension on said chart, and means controlled by the other meter for making a co-operating selection in the other dimension on said chart, a constantly driven shaft, printing means for periodically printing 'the value of the graduation/determined by said two selections, and time controlled means for clutching said constantly driven shaft to said printing means.

6. In combination, a pair of meters for measuring unitary values of a variable, a printing surface graduated in two dimensions in terms of a -function ot' said variable, an electrical circuit controlled by one of said meters for selecting graduations in one dimension on said chart, a second electrical circuit controlled by the other meter for selecting graduations in another dimension on said chart, periodically actuated means for printing the indication determined by said two selections, and means for opening said circuits during said printing operation.

T. In combination, a meter for measuring unitary values of a variable, a printing wheel, an electrical circuit controlled by said meter for advancing, said printing wheel in steps corresponding to the unitary values registered by the meter, time controlled means i'or periodically opening said circuit independently of the advancing of said printing wheehand for printing an indication on said printing wheel.

8. In combination, a printing wheel having type thereon, a meter for measuring unitary values of a variable, an electrical circuit controlled b the meter for advancing the printing w eel progressively to select aprinting character corresponding to the registration of unitary values by said meter, time controlled means for printing the character so selected, and lmeans controlled by said time controlled means for disabling said electrical circuit temporarily.

9. ln combination, a printing drum hav- :neo-nose 9 ing printing characters arranged in circum- `terential and longitudinal rowsA a meter controlled by reactive component rer selecting a row in one dimension, a meter controlled by power' component for selecting a row in another dimension, a constantly driven shaft, printing means lor making .a

ing' means operating` with the drum and movable relative thereto for selecting any -desired graduation on said drum, means controlledby saidmeter tor connecting said l shaft with said selecting means.

" drum and said selecting means to Zero po-v -tudinally ot vthe d ll. ln combination, a'meter responsive 'to function of the power component blowing in a conductor, a second meter responsive f to the function ci the reactive component :dowing in a conductor, a chart graduated in two dimensions interms of the function ot the two components', a constantly driven shaft, reference means for selecting an indication on the chart, said reference means and said chart being relatively movable with respect to each other, and means controlled by said meters and operated by said for securing the relative movement of said reference means Aand said phart to select the corresponding function.

l2. ln .a device of the class described, a cylindrical drum, the surface of the drum having a zero point and being graduated in two dimensions, to form rectangular unit areas, said unit areas having printing characters thereupon, each character being a trigonometric 'function of the location ot the unit area .with respect to the .Zero point` printing` means tor printing a desired printing character from said drum, a constantlyjdriven shaft, and means 'for periodically connecting said driven shaft to said printing'ineans. Y

i3. ln combination, a rotatable `drum graduated in two dimensions, printing platene co-operatingwith circumferential rows et printing characters on said drum, selecting means for selecting the desired one ot sai-d printing means and means periodically'actuated for operating the selected printing means, and means for restoring the' sition. e

le ln aineter of the class described, a printing drum graduated in two dimensions, means for progressively advancing the drum in a rotary' direction, means movable longiln and progressively movable to select desired printing character on said drum, means for periodically printing the selected printing` character and thereafter restoring the drum and said selecting means to zero position.

l5. In combination, a printing drum, means comprising an electric circuit for advancing said drum step by step, rotary selecting means for selecting a particular portion of the drum, 'said selecting means being movable longitudinally of the drum, means for operating said selecting means, comprising;r an electric circuit, a switching means controlled by. a predetermined degree ot motion ot said-drum for opening one ot said circuits.

1G. ln combination, a printing drum, means comprising an electric circuit for advancing said drum step by. step, rotary selecting means for selecting a particular portion of the drum, said selecting means being movable longitudinally of 'the drum, means tor operating said selecting means, comprising an electric circuit, switching means controlled by a predetermined degree of motion ol? said drum for opening one of said circuits, and mea-ns controlled by the extreme motion of the selecting means to open one of said circuits.

17. ln combination, a rotatable drum'having printing characters, a shaft journaled parallel to said drum,l means co-operating with the parallel shaft for printing a record from said drum, a power shaft parallel to said first shaft, and time controlled means governing the connection of said parallel to said power shaft for operating said printing means.

18. ln combination. a pair of meter elements responsive to different characteristics oi electric power tlowing in a line, a rotatable drum controlled by one of said meters` an operating selecting means controlled by the other meter, said drum being graduated over its surface in accordance with a function of saidvtwo characteristics, a record sheet oi the full width of the drum, and printing means periodically actuated for printing on said record sheet the selected indication on the drum.

i9. ln combination, a printing drum, a time wheel co-axial with the drum, means tor advancing the time wheel periodically, a meter, means controlled by the meterfor advancing the drum. a second meter, said drum being graduated throughout its surface in terms ot a function ot' the quantities Imeasured by said meters, a selecting means controlled by said second meter for selecting a corresponding indication on said drum. and printing means for periodically printing the 4indication of the time Wheel and of the drum. l

' 20. ln combination, a printing drum having a plurality of rows of'printing characters arranged circumferentially and longitiff/or breaking one path of the two-Way circuit tudinally, means controlled by one variable for advancing the drum rotarily, a plurality of printing platens arranged along a predetermined line adjacent the drum, a shaft parallel to the drum and adjacent said printing platens and a slider controlled by a `different variable and adapted to be advanced along said shaft for selecting the`v proper one of said printing platens, and means for periodically rocking said shaft to cause said slider to engage the proper printing platen to make a record from said printing drum.

21.. In combination, a printing drum, an operating slider, a cam shaft parallel to the drum, a power shaft, means for advancing the drum, cam means on the power shaft co-operating with said advancing means, advancing means for the slider, cam means on the power shaft co-operating with said latter advancing means, means on the power shaft for driving said cam shaft, and electric clutches for controlling both of said cam means and said latter connecting means.

22. In combination, a printing wheel, a ratchet connected with said printing wheel, a power shaft, means for constantly driving said power shaft, cam means on Said power shaft for operating said ratchet, an electric clutch for connecting said cam with said power shaft, an electric meter controlling said clutch, and a two-way. circuit connecting said clutch and said meter, said clutch having current controlling means for breaking one path of the two-way circuit, and establishing another path thereof.

23. In combination, av4 printing surface, means movable longitudinally thereof for selecting a desired printing character, a power shaft, means for constantly driving said power shaft, ratchet means for moving said selecting means, cam means on said power shaft lfor operating said ratchet means, an electric clutch for connecting said cam with said power shaft, an electric meter controlling said clutch, and a two-way circuit connecting said clutch and said meter, said clutch having current controlling means j:and establishing another path thereof on each operation.

24. In combination, a printing drum, pawl and ratchet means for rotating the drum, a selecting means longitudinally movable of the drum, a pawl and ratchet means for moving said selecting means, a meter controlling said rst ratchet means, va second meter controlling the second ratchet means, a power shaft, electric means for controlling the connection of said power shaft with both of said pawl and ratchet means, printing means for the drum, a time controlled v means governing said rinting means, and

means controlled simu taneously with the printin means for preventing the operation of both of said pawl and ratchet means.

25. In combination, a drum, pawl and ratchet means for rotating the drum, a selecting device movable longitudinally ofthe drum, pawl and ratchet means for advancing said selectingA means, a constantly driven power shaft, a meter, clutch means controlled by said meter tor connecting said constantly driven power shaft to the pawl and ratchet means for the drum, a second f meter and a second clutching means for connecting said constantly driven shaft to the pawl and ratchet means of the selecting means, and means for eriodically printing the indication on said c rum selected by said selecting means.

26. In combination, a drum, a record sheet of the same width as the drum, a power shaft arranged substantially `arallel to th drum, a pawl and ratchet mec anism for dvancing the drum rotarily step by step, a cam member on said power shaft, an electric clutch for clutching said cam member to said shaft, said cam member controlling said pawl and ratchet mechanism.

27. In combination, a drum, a record sheet of the same width as the drum, a power shafty arranged substantially parallel to the drum, a pawl and ratchet mechanism for advancing thedrum rotarilyl step by step, a cam member on said power shaft, an electric clutch for clutching said cam member to said shaft, said cam member controlling said pawl and ratchet mechanism, printing means for periodically printing a record from the drum, and means controlled by said printing means for disabling said clutching means, and for restoring said drum to zero position.

28. In combination, a movable-,printing drum, a slidable selecting membegxco-'operating with the drum, printing meansadapted to be operated by said selecting member, a power shaft. a cam shaft, a record sheet having means for advancing the same, means for restoring said drum to zero position, means for restoring said selecting means to zero position, a time controlled means for connecting said cam shaft to said power shaft, for printing a record of said drum, for advancing said record sheet and for restoring the drum and selecting means to zero position.

29. In combination, a pair of meters subject toY independent variables, a member having printing characters. means subject to one of said meters for making a selection on said printing member corresponding to one variable, means subject to the other meter for making a co-operating selection' on said member corresponding to the value of the second variable, electric circuits for making said selection controlled by said meters, a printing device, and time con- 

